Bawg-trau-ter
Origianlly a very derogatory word for an Irishman, not always used as an insult nowadays.

in the 1700s-1800s, the English often referred to the Irish they oppressed as "uncivilized bogtrotters", as the English have historically had the habit of calling anyone of a different nationality "uncivilized".

A derogatory term for a large group of inept northerrn UK mountain bikers, the sort who need to pad up to ride off a kerb, and get off and push up it. While this could be covered by the term "all the gear no idea", the important distinction is the sheer number of these bikers-cum-walkers gathered together in one place blocking the trail for people who can actually ride and making the case for more relaxed gun laws in the UK.